| 摘要 |
PROBLEM TO BE SOLVED: To restrain ozone cracks without deteriorating abrasion resistance and cutting resistance of a lug. SOLUTION: This rubber crawler is wound between a drive wheel 21 and a driven wheel in an endless belt manner. A plurality of lugs 26 are projected on an outer periphery of a rubber crawler body 23, and the lugs 26 contain 30 weight portion or more of styrene butadiene rubber (SBR) and less than 5 weight portion of polybutadiene rubber (BR) in 100 weight portion of rubber component, or are formed of a first rubber composition not containing polybutadiene rubber (BR). Non-projecting portions 23a of the plurality of lugs 26 on the outer periphery of the rubber crawler body 23 are formed of a second rubber composition containing 5 weight portion or more of polybutadiene rubber (BR) in 100 weight portion of rubber component. COPYRIGHT: (C)2008,JPO&INPIT
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